<template>
  <view>
    <view v-if="loading" class="gg-skeleton" :class="{ animate: animate }" :style="{ justifyContent: flexType}">
      <!-- 轮播图 -->
      <view v-if="imgTitle" class="gg-skeleton-imgTitle"></view>
      <!-- 头像图 -->
      <block v-if="showAvatar && !imgTitle">
        <view class="gg-skeleton-avatar" v-for="(item, index) in nameRow" :key="index" :class="[avatarShape]"
          :style="{ width: avatarSize, height: avatarSize}"></view>
      </block>
      <!-- 文字条 -->
      <view class="gg-skeleton-content" v-if="showTitle  && !imgTitle">
        <view class="gg-skeleton-title" :style="{ width: titleWidth }"></view>
        <view class="gg-skeleton-rows">
          <view class="gg-skeleton-row-item" v-for="(item, index) in rowList" :key="index" :style="{ width: item.width }"></view>
        </view>
      </view>
    </view>
    <view v-else>
      <slot></slot>
    </view>
  </view>
</template>

<script>
const DEFAULT_ROW_WIDTH = '100%'
const DEFAULT_LAST_ROW_WIDTH = '60%'
/**
 * 骨架屏幕
 * 文档说明：https://ext.dcloud.net.cn/plugin?id=926
 */
export default {
  name: "GgSkeleton",
  props: {
    loading: {
      type: Boolean,
      default: true,
    },
    imgTitle: {
      type: Boolean,
      default: false,
    },
    nameRow: {
      type: Number,
      default: 1,
    },
    flexType: {
      type: String,
      default: 'flex-start', // center	居中	√		space-between	两端对齐	√		space-around	子元素拉手分布	√		flex-start	居左		flex-end	居右
    },
    showAvatar: {
      type: Boolean,
      default: true,
    },
    avatarSize: {
      type: String,
      default: '50px',
    },
    avatarShape: {
      type: String,
      default: 'round', // square | round
    },
    showTitle: {
      type: Boolean,
      default: false,
    },
    titleWidth: {
      type: String,
      default: '40%',
    },
    row: {
      type: Number,
      default: 3,
    },
    animate: {
      type: Boolean,
      default: true,
    },
  },
  data() {
    return {}
  },
  computed: {
    rowList() {
      let list = []
      for (let i = 0; i < this.row; i++) {
        list.push({
          width: i === this.row - 1 && i !== 0 ? DEFAULT_LAST_ROW_WIDTH : DEFAULT_ROW_WIDTH,
        })
      }
      return list
    },
  },
}
</script>

<style>
.gg-skeleton {
  display: flex;
  padding: 8px;
  width: 100%;
}

.gg-skeleton-imgTitle {
  flex-wrap: wrap;
  background-color: #f2f3f5;
  margin: 0rpx auto;
  width: 95%;
  border-radius: 10px;
  height: 100px;
  display: block;
}

.gg-skeleton-avatar {
  flex-shrink: 0;
  background-color: #f2f3f5;
  margin-right: 8px;
}

.gg-skeleton-avatar.round {
  border-radius: 50%;
}

.gg-skeleton-content {
  width: 100%;
}

.gg-skeleton-title {
  background-color: #f2f3f5;
  height: 16px;
}

.gg-skeleton-title + .skeleton-rows {
  margin-top: 16px;
}

.gg-skeleton-rows {
}

.gg-skeleton-row-item {
  background-color: #f2f3f5;
  height: 32rpx;
}

.gg-skeleton-row-item:not(:first-child) {
  margin-top: 32rpx;
}

.gg-skeleton.animate {
  animation: gg-skeleton-blink 1.2s ease-in-out infinite;
}

@keyframes gg-skeleton-blink {
  0% {
    opacity: 1;
  }

  50% {
    opacity: 0.6;
  }

  100% {
    opacity: 1;
  }
}
</style>
